Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (? = 546.1 nm) is used, a stopping potential of 0.838 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? answer in eV (b) What stopping potential would be observed when using light from a red lamp (? = 693.0 nm)
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (? = 546.1 nm) is used, a stopping potential of 0.838 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? answer in eV (b) What stopping potential would be observed when using light from a red lamp (? = 693.0 nm)
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter28: Quantum Physics
Section: Chapter Questions
Problem 15P
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Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (? = 546.1 nm) is used, a stopping potential of 0.838 V reduces the photocurrent to zero.
(a) Based on this measurement, what is the work function for this metal?
answer in eV
(b) What stopping potential would be observed when using light from a red lamp (? = 693.0 nm)?
answer in V
answer in eV
(b) What stopping potential would be observed when using light from a red lamp (? = 693.0 nm)?
answer in V
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